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Molding compositions containing fillers and modified polybutylene terephthalate (PBT) random copolymers derived from polyethylene terephthalated (PET)

A technology of polyethylene terephthalate and polybutylene terephthalate, which is applied in the field of residues of ethylene terephthalate components, can solve the problems of non-supply and the like

Active Publication Date: 2009-04-22
SHPP GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Known technologies do not provide a meaningful solution to the long felt need for new thermoplastic compositions containing fillers and PBT derived from PET and having a highly useful and highly valuable combination of physical properties

Method used

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  • Molding compositions containing fillers and modified polybutylene terephthalate (PBT) random copolymers derived from polyethylene terephthalated (PET)
  • Molding compositions containing fillers and modified polybutylene terephthalate (PBT) random copolymers derived from polyethylene terephthalated (PET)
  • Molding compositions containing fillers and modified polybutylene terephthalate (PBT) random copolymers derived from polyethylene terephthalated (PET)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0265] The modified polybutylene terephthalate random copolymer is derived from polyethylene terephthalate as follows. The clear PET bottle waste was obtained from commercial sources. In the waste cleaning process, the PET waste is manually cleaned, including first washing with hot water, then manually picking to separate colored bottles and PVC bottles, crushing, hydrofloatation to separate PP, labels, lids, etc., alkali Wash to remove the glue, finally wash with demineralized water to remove the alkali, and then dry. The obtained PET flake is used as the main raw material in the depolymerization step. The iv specification of PET flakes recovered after consumption is 0.68~0.78dl / g, and the melting point specification is 245~255℃. The PVC content is less than 10ppm in specification. Butylene glycol is obtained from BASF, and its purity specification is >99.5wt.%. Ethylene glycol is obtained from Merck, and its purity specification is >99.5 wt.%. The TPT catalyst used was a commerc...

Embodiment 2-5

[0280] Example 2-5: Glass-filled composition

[0281] A glass-filled composition having the specified amounts of ingredients as shown in Table 4 was prepared and tested.

[0282] Table 4

[0283] Component

Unit

Example 2

Example 3

(comparative example)

Example 4

Example 5

(comparative example) PET-derived PBT, (0.66iv) wt.% 16 - 35.52 - PET-derived PBT, (1.2iv) wt.% 32.4 - 35.44 - GE VIRGIN PBT 195(0.66iv) wt.% - 16 - 35.52 GE VIRGIN PBT 315(1.2iv) wt.% - 32.4 - 35.44 Standard 13 micron glass fiber wt.% 30 30 30 30 Polycarbonate 105, grade 100 powder wt.% 2 2 - - High fluidity polycarbonate-Lexan

ML8199-111N

wt.%

18

18

-

-

Hydrocarbon wax release agent wt.% 0.4 0.4 - - Phosphoric acid—sodium, anhydrous wt.% 0.2 0.2 - - Hindered phenol stabilizer (Irganox1010) wt.% 0.06 0.06 0.04 0.04 Linear Low Density Polyethylene...

Embodiment 2

[0287] At a barrel and die temperature of 240-265°C and a screw speed of 150-300 rpm, the ingredients of Example 2 as shown above were placed on an 89mm single-screw extruder with a vacuum vented mixing screw. Squeeze out. The extruder has 8 independent feeders for different raw materials, of which one downstream feeder is for glass, and the extruder can operate at a maximum rate of 600 lbs / hr (272.2 kg / hour). The extrudate was cooled in a water bath and then pelletized. The test parts were injection molded on a van Dom molding machine set at a temperature of about 240-265°C. Before injection, the pellets were dried in a forced air circulation oven at 120°C for 3-4 hours.

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Abstract

The invention relates to a composition comprising (a) from 5 to 99 wt% of a modified polybutylene terephthalate random copolymer that (1) is derived from polyethylene terephthalate component selected from the group consisting of polyethylene terephthalate and polyethylene terephthalate copolymers and (2) has at least one residue derived from the polyethylene terephthalate component, and (b) at least 1 wt% of a filler component. In one embodiment, the invention relates to an article molded from the above-mentioned molding composition. In another embodiment, the invention relates to methods for making and methods for using the molding composition.

Description

[0001] Cross reference of related applications [0002] This application claims the rights and interests of the U.S. Provisional Patent Application Serial No. 60 / 763083 filed on January 27, 2006 and the U.S. Provisional Patent Application Serial No. 60 / 820469 filed on July 26, 2006. The entire content of the patent application is approved Reference is incorporated into this application. Background technique [0003] The invention relates to the field of molding compositions. [0004] Polyethylene terephthalate (also known as "PET") is a polyester of terephthalic acid and ethylene glycol, which can be obtained by polycondensation of dimethyl terephthalate and ethylene glycol, and terephthalate It is obtained by polycondensation of formic acid and ethylene glycol or ethylene oxide. PET exists as amorphous (transparent) and semi-crystalline (opaque and white) thermoplastic materials. In general, it has beneficial chemical resistance to mineral oils, solvents and acids, but not alkali....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/24C08G63/78
CPCY02W30/62
Inventor 肯尼思·F·米勒加尼什·坎南金胜度谢利·V·加萨韦达瓦尔·沙克里斯滕·科胡恩
Owner SHPP GLOBAL TECH BV